Retroreflective sheeting

Details Retroreflective sheeting Retroreflective sheeting

G - Physics

02

B

117/128, 240/150

G02B 5/128 (2006.01)

Patent

CA 1244306

Abstract of the Disclosure A retroreflective sheeting utilizing a particular polymer as the bead bond layer is disclosed. The polymeric bead bond comprises urethane and urea linkages, and has a stage prior to thermosetting in which it may be softened by the application of heal and in which it has a relatively nontacky character. Preferably the polymeric bead bond composition is prepared from an isocyanate-functional polymeric compound which has a substantial portion of its isocyanate groups masked with an isocyanate masking agent, and a crosslinking agent which is substantially insoluble in aprotic solvents. The retroreflective sheeting disclosed possesses the unique combination of high reflectance and superior exterior durability.

434466

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